I have a directory with text files. They are named as A1,A2,A3,A4,A5, B1,B2,B3,B4,B5,C1,C2... and so on. Set A is one group of txt files, Set B is another and so on. All the sets should have (let's say) 5 txt files. However, not all the sets satisfy this requirement.
For example, I have sets like, D1, D3, D4, E5, F1, F2, F5.. etc. (note that Set D is missing D2, D5 and Set E is missing E1, E2, E3, E4 and so on)
Is it possible to read the directory, identify the missing files and create dummy/empty txt files matching the names as requirement specifies?
Any help/lead is warmly appreciated.